2.85
fix whitespace formatting in cmake files
Removed many memoryleaks in Example Browser, reducing some technical debt. When running the Example Browser with Basic Example, 'visual leak detector' show no leak. Many other individual examples still leak, so it is work-in-progress. Disabled the profiler window (too many leaks)
add Vehicles/Hinge2Vehicle demo, based on the ForkLift demo, using btHinge2Constraint with rigid body wheels change btHinge2Constraint to derive from new btGeneric6DofSpring2Constraint